The Semi-Auto MK 760 uses a radically different bolt than that used in the SMG. The extractors are different
as well. Note the notch at the rear of the extractor to receive the extractor spring.
We have found that bolt design and construction varies depending on when the semi 760s were made. The extractors
pictured work in most semi 760s but keep in mind that it may be necessary to ship the bolt to us so that we may
fit the extractor.